Quartz mill



E. G. TROWBRIDGE V QUARTZ MILL July 15, 1924.

Filed Sept. 27, 1922 75 .jr'l 120 Patented July 15, 1924.

ra ses UNITED GEE E.CE.

EDWIN GUY raowsnrnenor vrnnnoen, OREGONFASSIGNOR 'ro ryiianronn IRON",

WORKS, or MEDFORD, roaneomn coarormrrorror"oaneon.

QUARTZ CMZILL.

Application-filed September 27, 19 22. Serial No.- 590,893."-

To all whom it may concern:

Be it known tllzlt EDWIN G. TROWBRIDGE, a ci-tizenof the United States, residing at 'Medf'o'rd, in the county of Jackson and State of Oregon, has invented certain new and-useful Improvements in Quartz Mills, of which the following is a specificati0n, reference being had tothe accompanying drawings.

This invention relatesto certain improvements in quartz mills and it is -anobject-of the invention to provide a novel and improved -device of this general character comprising a rotatabletub'ular or hollow member in which a crushing roller or rollers are arranged-andwhich' tubular member comprises a plurality of staves orthe' like, adjacent staves being adjustable to regulate the mesh to which the ore is to be ground.

Another ob'j'ectof the invention is to provide a novel and improved device wherein the ground or comminuted ore is adapted to be discharged from a rotatable tubular member under the influence of water.

The invention consists in the details of construction and in the combination and arrangement of the several parts of my improved quartz mill whereby certain important advantages are attained and the device rendered simpler, less expensive and otherwise more convenient and advantageous for use, as will be hereinafter more fully set forth.

The novel features of my invention will hereinafter be definitely claimed.

In order that my invention may be the better understood, I will now proceed to describe the same with reference to the ac companying drawings, wherein:

Figure 1 is a longitudinal sectional view taken through a mill constructed in accordance with an embodiment of myinvention;

Figure 2 is a sectional view taken substantially on the line 2-2 of Figure 1;

Figure 3 is an enlarged fragmentary view in end elevation of the device as herein disclosed; and

Figure 4C is a view in perspective of one of the shims herein comprised and applied.

As disclosed in the accompanying drawings, T denotes a tubular member which comprises the heads 1 and 2. The head 1 has suitably fixed to the axial center thereof a solid shaft or trunnion 3 while the head 2 at its axial center is provided with a tubular trunnion 4 defining a central open ing 5 inthehead-2. The shafts or trunnions 3 and tare-adaptedto be rotata'bly supported by'the -bearings 6.

The-peripheriesof the heads 1 and;2-are defined by the outwardly, directed flanges 7 being reinforced by the radially disposed webs'8- herein disclosed asintegrally formed witlrthefianges? and heads 1; and 2.

The flanges? of-the heads' l and 2 are formed to provide aplurality of facets 9 1 and similar facets of the heads 1 and 2 having resting. thereon the extremities of a stave 10,:sa-id stave being preferably of cast metal. Interposed between a facet 9 and the adjacent end port-ionof a stave 10 is a;

a filler llof leather whichserves to provide Ineffective'seal between the staves and the heads land 2 and also to compensate for the wearaofthe machine- The'extremities of the staves 10 are bolted as at 12 to the heads 1 and 2, each of said bolts having as sociated therewith a clamping nut 14. The quartz or ore to be ground or comminuted is placed within the tubular member afforded by the assembled heads 1 and 2 and staves 10 preferably through the hollow trunnion or shaft 5 and the tubular member is suitably rotated as through the instrumentality of the gear 15 fixed to the trunnion or shaft 3.

The mill embodies a plurality of crushing rollers 16 which are loosely arranged within the tubular member, each of said rollers 16 being of a length substantially equal to the space between the heads 1 and 2.

As the ore is crushed or comminuted the same passes outwardly from within the tubular member between the staves 10 and in order to facilitate such discharge of the ground or comminuted ore I find it of advantage to direct a stream of water within the tubular member and which stream is the end portions of adjacent staves 10 the shims 18, each of said shims being of a length substantially equal to the width of a flange 7 plus the thickness. of the adjacent head 1 or 2; The lower marginal portion of theshim is defined by a substantially per: pendicularly related flange 19 which underlies a stave 10, whereby the shim is effectively prevented from Working out. The spacing between adjacent staves 10 may be adjusted as required by using shims of desired thickness. The filler 11 hereinbefore referred to allows enough take up so that shims of different sizes may be employed to advantage.

' Each of the staves 10, as herein disclosed, is strengthened or reinforced by an outstanding longitudinally disposed web 20 I preferably positioned at substantially the transverse center of the stave.

The shims may be readily and conveniently applied by proper loosening of the bolts 12 as is believed to be apparent to those skilled in the art to which the present invention appertains.

From the foregoing description it is thought to be obvious that a quartz mill constructed in accordance with my invention is particularly well adapted for use by reason of the convenience and facility with which out departing from the principles and spirit i thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice except as hereinafter claimed.

I claim:

In a quartz mill, a rotary drum comprising heads having facets, staves secured upon the heads at the facets, and means for spacing the staves apart, said means consisting of shims of angular formation insertible between the successive staves at their points of engagement with the heads, the shims in cluding main portions interposed between the staves and other portions located between the staves and the facets thereunder, the engagement of the second named portions beneath the staves resulting in moving them radially outwardly to an extent compensating for the thickness of the shim portions located between the staves.

In testimony whereof I signature.

EDWIN GUY TROWBRIDGE.

hereunto aflix my 

